The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 1998
Filed:
Nov. 22, 1995
Applicant:
Inventor:
Melvin Park, Nashua, NH (US);
Assignee:
Bruker Analytical Instruments, Inc., Billerica, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; H01J / ;
U.S. Cl.
CPC ...
250287 ; 250281 ;
Abstract
A method and apparatus to accelerate ions using two or more electric fields which are spatially separated. Electric fields are used to accelerate ions. With electric fields of the proper strength and geometry, ions may be space focused so that ions of a given mass-to-charge arrive at a virtual object plane simultaneously. According to the present invention, a split field interface, in the form of a set of biased electrodes, is used to produce and adjust the position of a virtual object plane.